Accent Color for Admin Buttons and Links
Changes the blue of primary buttons, links and focus rings across wp-admin to one accent color of your choice.
Snippet Library
Admin snippets for WordPress
Snippets that tidy up and tailor the WordPress admin: hide menu items, add columns to post lists, change the footer text and remove clutter. Made for agencies and site owners who hand a dashboard over to clients or editors.
Fuller Classic Editor Toolbar
Always shows the second toolbar row in the classic editor and adds font size, highlight, subscript and superscript buttons.
Rename "Posts" to "Articles"
Changes every label of the built-in Posts type in the admin, such as the menu, buttons and messages, to a name that fits your site.